Earplug with engagement means

Details Earplug with engagement means Earplug with engagement means

2011-04-26

2011-04-26

Bianco, Patricia M (Department: 3772)

Surgery

Body protecting or restraining devices for patients or infants

Head or face protector

C128S866000, C381S328000, C181S129000, C181S135000

Reexamination Certificate

active

07931027

ABSTRACT:
An earplug for a hearing aid adapted for engagement with earpieces made of materials with a comparatively high hardness. The earplug comprises a resilient sleeve and a shell, the shell having an outer portion adapted to fit within a user's ear canal and a central bore, the central bore having a first abutment shoulder adapted for retaining the resilient sleeve inside the shell and a second abutment shoulder adapted for providing a stop for the resilient sleeve and for the earpiece. Hereby the resilient sleeve is able to combine relatively relaxed manufacturing tolerances with precise positioning of the earpiece inside the earplug.

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patent: WO 2007006302 (2007-01-01), None

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